[Features] Parent Close Policy is missing in Python

[rachfop]

Parent Close Policy is missing is Python

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You can provide a code snippet in the comments or a link to the line numbers of the samples-repo. Once added, I'll update the app-dev page with the new code snippet.

[cretz]

This should not be an entire section IMO. This is one tiny setting on a function.

This is just setting the parent_close_policy keyword argument on client.start_child_workflow/client.execute_child_workflow.